Dixon 6ES6-B Brass Quick-Connect Hydraulic Fitting, Coupler, 3/4" Straight Coupling, 3/4" Hose ID Barbed Straight through quick connect coupler for connecting directly to a hose with a barbed hose ID connection for a greater hold on the hose 3/4" straight through quick connect coupler with a with a 3/4" ID barbed hose end Valveless construction provides maximum flow with minimum pressure drop Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability Used for hydraulic applications in industrial operations